Ingress is an Altered Reality Game (ARG) from Google, specifically a company called Ninantic. They are some how related to the Google Maps people.

The app is basically a form of Google maps, with the colors shifted to darker colors.

The purpose of the game is to control Portals, link those portals and create fields with three links.

Two factions compete for those, the blue Resistance and green Enlightened.

Portals exist all over the world. Historic sites, libraries, interesting man-made feature, religious buildings, statutes, local meeting places... All could be portals. Most are actually user submitted too. With more being added all the time.

I had been meaning to post about this but got waylaid! Had mentioned it in the little chatbox and some ppl tried it but concerned about the privacy implications of sharing location data with Google while playing.

Well and truly addicted myself, over in London we have an incredible team and really do dominate through a good deal of team work and co-ordination and over the last 18mths have seen it switch from a mostly blue to mostly green city

Have been to so many new places and met lots of new people through it, agent name is same as my username in here.